Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TP4-1 found under Insulator Disk by Eldec Corporation. The National Stock Number assigned to this part is 5970011042385, and the Federal Supply Class is 5970 Electrical Insulators And Insulating Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TP4-1.